How to select 6 Kinds of cabling system

When the 10G or even the million-gigabit copper becomes a hot spot, is it a bit outdated to talk about the 6 categories? Some might ask. But at present, most projects are using 6 types of systems is the fact that the user is reminded that the selection of 6 categories must choose the "whole" 6 categories.

The American Association of Communications Industry TIA has officially passed the 6-class wiring Standard (tia/eia-568b.2-1) as early as June 2002, and the standard is approved by ISO. Standard 6 wiring system must be backward-compatible with 3 categories, 5 categories, 5 types of cabling products, and must meet the requirements of mixed use. In the standard through more than 3 years of today, it is 6 types of wiring system ushered in universal application. Currently, a lot of new projects are replacing 5 and super 5 classes with 6-class cabling systems. Let's take a quick look at several features of the 6 cabling system.

An important difference between Class 6 and Class 5 is that the former improves the performance of crosstalk and Echo loss, which is very important for new high-speed network applications. The 6 class performance test frequency is 1mhz~250mhz, at 200MHz the synthesis attenuation crosstalk ratio (PSACR) should have the big allowance, it provides twice times the Ultra 5 class bandwidth. In order to ensure the good electromagnetic compatibility of the whole system, the paper also puts forward some suggestions on the matching of cable and connecting parts in the standard.

So, for users, select 6 types of cabling system should pay attention to what?

First, to complete the 6 classes. The real Class 6 system should meet the requirements of 6 types of performance in connectors, cable to link and channel, including modules, wiring racks, jumpers and cables and other components. This requires manufacturers to provide a mature full range of 6 products for the user to choose, can be suitable for any installation methods and configuration requirements.

Second, a comprehensive test data is needed. Manufacturers should provide 6 types of products and systems in the 250MHz bandwidth of the comprehensive test data and withstand the 6 class Iso/tia standard requirements of the parameters and indicators for one by one comparison. The test results of some characteristic frequency points do not represent the performance of the full test bandwidth. Manufacturers should also provide some test results from domestic and foreign third parties and official agencies, also, this test should be the worst case scenario where the submission of the system test report must be the worst-case model defined in the TIA/ISO standard (3 connection point 90m link or 4 connection point 100m channel). If possible, it is best to require the use of on-site testing equipment in accordance with the latest international standards for vendors to submit links or channels for on-site testing, to see whether the 6 categories of products to meet the target.

Again, to professional personnel. 6 class System installation is more complex than 5, installation quality of the high and low performance of the impact is very large, so the user should be specific to the 6-class wiring system installation Training Engineering implementation Technician to install, this point in the project should be clearly proposed.